Gas main valve wrench



FIG. 1 is a top plan view of a gas main valve wrench showing our new design;

FIG. 2 is a left side elevation view of the gas main valve wrench shown in FIG. 1, the right side, not shown, appearing substantially identical thereto;

FIG. 3 is a front elevation view of the gas main valve wrench shown in FIG. 1, the rear elevation, not shown, being a mirror image thereof; and

FIG. 4 is a bottom plan view of the gas main valve wrench shown in FIG. 1. 

The ornamental design for a gas main valve wrench, substantially as shown d described. 